Abstract
The optical bistability in laser diodes (LDs) is a most interesting subject because of their many advantages; for example, they have optical gain, can provide large fan-out and can operate faster than nano- to subnano seconds. Various types of bistable devices were realized, and they are expected to have broad applicational use, centering mainly in the field of optical communications.1,2 Recently, we demonstrated that an optical inverter device can be fabricated by making use of a laser diode and narrow absorption spectrum of erbium (Er) in an yttrium aluminum garnet (YAG) crystal, and referred to this as ORION (Optical logic devices using the Red shift of a laser diode and Inversion in Optical absorbers (or filters) of Narrow spectral bandwidth).3-5 This paper reports that the optical switch-off phenomenon was observed by direct injection of an external dye laser into the LD. Then, all optical logic operation with the ORION device was confirmed to be feasible with direct injection of light.
© 1994 Optical Society of America
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